<template>
  <div id="home" class="wrapper">
    <nav-bar class="home-nav"><div slot="center">购物街</div></nav-bar>

    <scroll class="content" ref="scroll" :probe-type="3" @scroll="contentScroll">
      <home-swiper :banners="banners"></home-swiper>
      <home-recommend-viwe :recommends="recommends"></home-recommend-viwe>
      <feature-view></feature-view>
      <tab-control class="tab-control"
      :titles="['流行', '新款', '精选']"
        @tabbClick="tabbClick"></tab-control>
      <goods-list :goods="showGoods"></goods-list>
    </scroll>
    <back-top @click.native="backClick" v-show="isShowBackTop"></back-top>
  </div>
</template>

<script>
  import NavBar from '@/components/common/navbar/NavBar'
  import HomeSwiper from './childComps/HomeSwiper'
  import HomeRecommendViwe from '@/views/home/childComps/HomeRecommendViwe'
  import FeatureView from './childComps/FeatureView.vue'

  import TabControl from '@/components/content/tabControl/TabControl.vue'
  import GoodsList from '@/components/content/goods/GoodsList'
  import Scroll from '@/components/common/scroll/Scroll.vue'
  import BackTop from '@/components/content/backTop/BackTop'


  import {getMultiData, getHomeGoods} from 'network/home'
  // import Swiper from '@/components/common/swiper/Swiper';
  // import SwiperItem from '@/components/common/swiper/SwiperItem';
  // import {Swiper, SwiperItem} from 'components/common/swiper'


  

  export default {
    name: "Home",
    components: {
      NavBar,
      HomeSwiper,
      HomeRecommendViwe,
      FeatureView,
      TabControl,
      GoodsList,
      Scroll,
      BackTop
      
    },
    data() {
      return {
        // result: null
        banners: [],
        recommends: [],
        goods: {
          'pop': {page: 0, list: []},
          'new': {page: 0, list: []},
          'sell': {page: 0, list: []},
        },
        currentType: 'pop',
        isShowBackTop: false
      }
    },
    computed: {
      showGoods() {
        return this.goods[this.currentType].list
      }
    },
    created() {
      // 01请求多个数据
      this.getMultiData()
      //02请商品数据
      this.getHomeGoods('pop')
      this.getHomeGoods('new')
      this.getHomeGoods('sell')
    },
    methods: {
      // 事件监听
        tabbClick(index) {
          switch (index) {
            case 0:
              this.currentType = 'pop'
              break
            case 1:
              this.currentType = 'new'
              break
            case 2:
              this.currentType = 'sell'
              break
          }
        },
        backClick() {
          this.$refs.scroll.scrollTo(0, 0)
        },
        contentScroll(position) {
          this.isShowBackTop = -(position.y) > 1000
        },
        
      // 网络请求
      getMultiData() {
        getMultiData().then(res => {
        // this.result = res;
        this.banners = res.data.banner.list;
        this.recommends = res.data.recommend.list;
      })
      },
      getHomeGoods(type) {
        const page = this.goods[type].page + 1
        getHomeGoods(type, page).then(res => {
          this.goods[type].list.push(...res.data.list)
          this.goods[type].page += 1
      })
      }
      
    },

  } 
</script>

<style scoped>
  #home {
    padding-top: 44px;
    height: 100vh;
  }
  .home-nav {
    background-color:#FF5777;
    color:#fff;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    z-index: 19;
  }

  .tab-control {
    position: sticky;
    top: 44px;
    z-index: 9;
  }

  .content {
    /* height: calc(100% - 98px); */
    overflow: hidden;
 
    position: absolute;
    top: 44px;
    bottom: 49px;
    left: 0;
    right: 0;
    /* background-color: chartreuse; */
  }



  /* #home {
    height: 100vh;
    position: relative;
  }

  .home-nav {
    background-color: var(--color-tint);
    color: #fff;
    position: relative;
    z-index: 9;
  }

  .tab-control {
    position: relative;
    z-index: 9;
  }

  .content {
    position: absolute;
    top: 44px;
    bottom: 49px;
    left: 0;
    right: 0;
  } */
</style>
